How to achieve harmony in work with an egoist

Egoists think only about themselves. In worst cases, this is combined with toxic behavior and narcissism. Narcissists differ in that they do not know how to appreciate other people's good ideas and tend to exaggerate their own importance. If you are a boss, try to deal with this behavior rather sooner than later and directly. When you see an employee is taking advantage of others, let him know that this behavior is unacceptable. If the egoist is your colleague, use the same approach. It is better to immediately stop such an attitude and unequivocally make it clear that you will not tolerate it.